Yep. Soon Google crawlers will be indexing orkut profiles and everyone on orkut will be googlable. In simple terms you can use google search to find your friends’ orkut profile and your friends can do same to find you!
Although there is no official post regarding this on any Google or Orkut official blog, a new privacy setting – "orkut in google search results", indicates just this.
By default this setting is configured to show your orkut information in search results! That’s why you don’t need to do anything to appear in google search.
Those who are concern about privacy can choose "hide information" option. There is no fine grained control like facebook provides. So better opt for hiding if you have doubt on how this feature will be used (or abused).
Three months back facebook opened their user database for search engines and considering facebooks that move this should not surprise anyone.
Also can orkut do this as sensibly as facebook did?
Related: Read how facebook did that!